Release mechanism for a sectional door

E - Fixed Constructions – 06 – B

Patent

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Details

E06B 9/58 (2006.01) E06B 9/90 (2006.01) E06B 9/80 (2006.01)

Patent

CA 2448941

A release mechanism for protecting a sectional door under impact allows one or more door panels to breakaway from its guide track without damaging the door. The release mechanism includes a snap-in pin that can be selectively repositioned to provide various operating modes. Examples of operating modes include unidirectional release, bi-directional release, and a disabled mode. In some cases, the breakaway threshold is greater in one direction than another. In the disabled mode, the release mechanism is not meant to release. Some embodiments include a door locking mechanism that still allows the release mechanism to operate.

Cette invention porte sur un mécanisme de dégagement servant à protéger une porte sectionnelle lors d'un choc et permettant à un ou plusieurs panneaux de la porte de se dégager du rail de guidage sans que la porte soit endommagée. Ce mécanisme de dégagement comprend une tige à enclenchement rapide pouvant être sélectivement repositionnée afin d'enclencher divers mode de fonctionnement. Ces modes de fonctionnement comprennent notamment un dégagement unidirectionnel, un dégagement bidirectionnel et un mode désactivé. Dans certains cas, le seuil de dégagement est supérieur dans un sens que dans l'autre. En mode désactivé, le mécanisme de dégagement ne doit pas fonctionner. Certains modes de réalisation mettent en oeuvre un mécanisme de verrouillage de porte permettant au mécanisme de dégagement de fonctionner.

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